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1MRS757820 B
4.1.4
Recloser Protection and Control RER615
Communication Protocol Manual
Legacy master SBO allows non-standards compliant behavior.
Additional parameters
Time format can be set to Local or UTC.
Need time interval is the interval in minutes for setting the need time bit in the IIN.
The IIN need time bit requests the DNP3 master to send a time synchronization to
the IED. When set to 0, the need time IIN bit is never set, and DNP3 time
synchronization is never requested. The time synchronization source needs to be
set to DNP3 to allow the DNP3 time synchronization. The DNP3 delay
measurement can have an adverse effect on time synchronization accuracy, and it
should be avoided for TCP/IP.
Default Variation Obj N is the variation with which the slave replies when the
master asks for DNP Object type N variation 0. It is also the variation in which
class events are reported.
Table 9:
Default variation options for supported DNP object types
DNP Obj N Default variation option
1
1
2
1
2
2
1
2
3
30
4
1
2
3
32
4
Deadbanding of the analog static values cannot be set in DNP3. Event generation is
dependent on the functions employed in the IED, and the execution loops to which
these functions belong. See the IED's technical manual for setting deadbands.
As a result of the event generation mechanism in the IED, the events reported by
DNP3 are very accurate and are the same events that can be retrieved over the
WHMI or other protocols such as IEC 61850-8-1.
Legacy master SBO provides compatibility to some older DNP3 masters for the
Select Before Operate command. When disabled, DNP3 expects the application
Variation description
Binary input
Binary input with status
Binary input event
Binary input event with time
32 bit analog input
16 bit analog input
32 bit analog input without flag
16 bit analog input without flag
32 bit analog input event
16 bit analog input event
32 bit analog input event with time
16 bit analog input event with time
Section 4
DNP3 parameters
21
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